In a dispute that dates back decades, the Trump administration announced it will levy a tariff on imports of softwood lumber from Canada, which is used primarily in housing construction.
Trump has threatened trade retaliation. And his presidency could herald new instability in the region if he pulls back on the U.S. security umbrella that's been in place since the end of World War II.
A letter from 370 economists, including eight Nobel Prize winners, says the Republican presidential candidate has misled the country about trade, jobs and growth.
What would happen to the U.S. economy if the next president sparked a trade war and the flow of goods was cut off? One place to look for an answer: California.
Vice Chancellor Sigmar Gabriel said talks over the Transatlantic Trade and Investment Partnership have "de facto failed." The climate for trade deals has soured on both sides of the Atlantic.
Environmentalists opposed to a US-EU trade deal say documents they leaked prove corporations have too much say. But EU officials say that's "flatly wrong."
Americans shared their views on trade with NPR and member stations. One thing is clear: Millions of voters have deep feelings about trade — and often are at odds with each other about it.
Candidates vying for president are talking a lot about trade. But trade is not a subject easily summed up in slogans. Here are resources to help you study up on trade and make your own decisions.